Date and time

Saturday, May 18. Walla Walla—Carpool 9:00, leave 9:10 am; Milton-Freewater--Carpool 9:20 am, leave 9:30. Hike 10 am-3 pm

Name of hike 

Grouse Mountain (or South Fork of the Walla Walla)


Hike description  

North Fork Umatilla Wilderness has spectacular views and abundant wild flowers. The forest service trailhead is accessed through McDougal Camp, on Weston Mountain, and is about 30 minutes from Milton-Freewater and is 30 miles east of Pendleton. It encompasses 20,299 acres in Umatilla and Union counties.

If the road to the trailhead is impassable due to snow, the group will continue driving up the South Fork of the Walla Walla River Rd, stopping for a short walk to a hidden waterfall with beautiful flowers. For the 8 mile roundtrip hike, we’ll park at the trailhead above Harris Park and walk along the river.


Clark Colahan,, 509-592-7660

Time and distance

4-5 miles—Grouse Mtn or 8 mi—South Fork WW River


8 Medium to difficult due to the long, steep uphill on the return.

Dogs welcome?


Start location  

To car pool from Walla Walla, meet at 9 am below the tall Staples sign in the Cascade Farm & Outdoor parking lot on 598 N Wilbur Ave across from McCurley Toyota. Leave at 9:10 am and arrive at Milton-Freewater location at 9:25.

To car pool from Milton-Freewater, meet in the parking lot in front of Ace Hardware, where the state highway jogs to the left at 9:20 am, leave at 9:30.


Drive south from Walla Walla to Milton-Freewater.

What to bring

Lunch and water